package com.panoramagl.downloaders.ssl;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.UnknownHostException;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.TrustManager;

import org.apache.commons.httpclient.protocol.ProtocolSocketFactory;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

/**
 * This socket factory will create ssl socket that accepts self signed
 * certificate
 * 
 * @author olamy
 * @version $Id: EasySSLSocketFactory.java 765355 2009-04-15 20:59:07Z evenisse
 *          $
 * @since 1.2.3
 */

public class EasySSLSocketFactory implements ProtocolSocketFactory
{
    private SSLContext sslcontext = null;

    private static SSLContext createEasySSLContext() throws IOException
    {
            try {
                    SSLContext context = SSLContext.getInstance("TLS");
                    context.init(null, new TrustManager[] { new EasyX509TrustManager(
                                    null) }, null);
                    return context;
            } catch (Throwable e) {
                    throw new IOException(e.getMessage());
            }
    }

    private SSLContext getSSLContext() throws IOException
    {
            if (this.sslcontext == null) {
                    this.sslcontext = createEasySSLContext();
            }
            return this.sslcontext;
    }

    /**
     * @see org.apache.http.conn.scheme.SocketFactory#connectSocket(java.net.Socket,
     *      java.lang.String, int, java.net.InetAddress, int,
     *      org.apache.http.params.HttpParams)
     */
    public Socket connectSocket(Socket sock, String host, int port,
                    InetAddress localAddress, int localPort, HttpParams params)
                    throws IOException, UnknownHostException, ConnectTimeoutException {
            int connTimeout = HttpConnectionParams.getConnectionTimeout(params);
            int soTimeout = HttpConnectionParams.getSoTimeout(params);

            InetSocketAddress remoteAddress = new InetSocketAddress(host, port);
            SSLSocket sslsock = (SSLSocket) ((sock != null) ? sock : createSocket());

            if ((localAddress != null) || (localPort > 0)) {
                    // we need to bind explicitly
                    if (localPort < 0) {
                            localPort = 0; // indicates "any"
                    }
                    InetSocketAddress isa = new InetSocketAddress(localAddress,
                                    localPort);
                    sslsock.bind(isa);
            }

            sslsock.connect(remoteAddress, connTimeout);
            sslsock.setSoTimeout(soTimeout);
            return sslsock;

    }

    /**
     * @see org.apache.http.conn.scheme.SocketFactory#createSocket()
     */
    public Socket createSocket() throws IOException {
            return getSSLContext().getSocketFactory().createSocket();
    }

    /**
     * @see org.apache.http.conn.scheme.SocketFactory#isSecure(java.net.Socket)
     */
    public boolean isSecure(Socket socket) throws IllegalArgumentException {
            return true;
    }

    /**
     * @see org.apache.http.conn.scheme.LayeredSocketFactory#createSocket(java.net.Socket,
     *      java.lang.String, int, boolean)
     */
    public Socket createSocket(Socket socket, String host, int port,
                    boolean autoClose) throws IOException, UnknownHostException {
    return getSSLContext().getSocketFactory().createSocket(socket, host, port, autoClose);
    }

    // -------------------------------------------------------------------
    // javadoc in org.apache.http.conn.scheme.SocketFactory says :
    // Both Object.equals() and Object.hashCode() must be overridden
    // for the correct operation of some connection managers
    // -------------------------------------------------------------------

    public boolean equals(Object obj) {
            return ((obj != null) && obj.getClass().equals(
                            EasySSLSocketFactory.class));
    }

    public int hashCode() {
            return EasySSLSocketFactory.class.hashCode();
    }

	@Override
	public Socket createSocket(String arg0, int arg1) throws IOException,
			UnknownHostException {
		return getSSLContext().getSocketFactory().createSocket(arg0, arg1);
	}

	@Override
	public Socket createSocket(String arg0, int arg1, InetAddress arg2,
			int arg3) throws IOException, UnknownHostException {
		return getSSLContext().getSocketFactory().createSocket(arg0, arg1, arg2, arg3);
	}

	@Override
	public Socket createSocket(String arg0, int arg1, InetAddress arg2,
			int arg3,
			org.apache.commons.httpclient.params.HttpConnectionParams arg4)
			throws IOException, UnknownHostException,
			org.apache.commons.httpclient.ConnectTimeoutException {
		return getSSLContext().getSocketFactory().createSocket(arg0, arg1, arg2, arg3);
	}
}
